<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>Document</title>

       
        <link rel="stylesheet" href="css/style.css">
        <script src="js/echarts.min.js"></script>
        <style>

/* 
            选择器{
            
            属性:值;
            
            }

            1.标签选择器 tag{} 大范围/通用的
            2.类选择器 .class{} 一类样式
            3.id选择器 #id{} 唯一样式
            4.统配 * 通用公共的

            高级选择
            1.交集 选择1选择2 筛选
            2.并集 选择1,选择2 统配大面积
            3.后代 选择1 选择2 筛选
            4.子代 选择1>选择2 筛选
            5.伪类 元素:内容 对某类元素的不同状态进行修改



*/

            div{
                color: red;
                font-size: 30px;
                text-decoration: underline;
                font-weight: bold;
                text-align: center;
                font-style: italic;
            }

            p{
                color: red;
                font-size: 30px;
                text-decoration: underline;
                font-weight: bold;
                text-align: center;
                font-style: italic;
            }
            h1 {
                color: blue;
                font-size: 50px;
                font-weight: bold;
                background-color: pink;
            }
            .new{
                font-size: 100px;
            }
            #test1{
                background-color:pink;
                color: rebeccapurple;
            }
            .cls1{
                background-color:pink;
                color: rgb(51, 51, 153);
            }
            /* 交集选择 */
            p.cls1{
                color: rgb(51, 151, 153);
            }

            /* 并集选择 */
            div,h1{
                font-size: 25px;
            }
            /* 后代选择 只要是嵌套关系就行,不论层级多少*/
            div p{
                font-size: 40px;
            }
             /* 子代选择 有嵌套关系,必须是一代*/
             div>p{
                color: chocolate;
            }

            	/*让超链接点击之前是红色*/
            a:link{
                color:red;
            }

            /*让超链接访问之后是橘色*/
            a:visited{
                color:orange;
            }

            /*鼠标悬停，放到标签上的时候*/
            a:hover{
                color:green;
            }

            /*鼠标点击链接，但是不松手的时候*/
            a:active{
                color:black;
               
            }
            #test1:hover{
                color:green;
            }
        </style>
    </head>
    <body>

        <a href="http://127.0.0.1:8000/hello?name=wwh" target="_blank">访问</a>
        <h1>我是大标题</h1>
        <div>
            我是内容
        </div>
        <div>123</div>
        <div>123</div>
        <div id="test1">456</div>
        <div>123</div>
        <div class="cls1">789</div>
        <div>123</div>
        <div>123</div>

        <p>asjkhdiauhdkjhsad</p>
        <p class="cls1">8910</p>
        <p >789</p>

        <div >

            <span>
                <p>abc</p>
            </span>
            <p>bcd</p>
        </div>

        <div id="main" style="height: 400px; width: 600px;"></div>

        <div>倒计时60秒还剩<span id = 'time'>60</span></div>
       
        <script>



            /* dom
            获取也页面内某一元素节点  node element
            */

            /* 获取节点 */
            let div = document.querySelector('div')//返回一个,如果有多个就返回第一个
            document.querySelectorAll('p')//返回列表

          


            click= function(){

                if (div.innerText = '我是内容'){
                    div.style.color = 'blue'
                    div.style.backgroundColor = 'pink'
                    div.innerText = '我是叶良辰'

                    div.classList.add('new')
                }else{
                    div.innerText = '我是内容'

                }
               
            }

            div.addEventListener('click',click)

            num = 60

            let time = document.querySelector('#time')
            setInterval(()=>{
                time.innerHTML = num--
            },1000)


            var data = [
        [
            [28604, 77, 17096869, 'Australia', 1990],
            [31163, 77.4, 27662440, 'Canada', 1990],
            [1516, 68, 1154605773, 'China', 1990],
            [13670, 74.7, 10582082, 'Cuba', 1990],
            [28599, 75, 4986705, 'Finland', 1990],
            [29476, 77.1, 56943299, 'France', 1990],
            [31476, 75.4, 78958237, 'Germany', 1990],
            [28666, 78.1, 254830, 'Iceland', 1990],
            [1777, 57.7, 870601776, 'India', 1990],
            [29550, 79.1, 122249285, 'Japan', 1990],
            [2076, 67.9, 20194354, 'North Korea', 1990],
            [12087, 72, 42972254, 'South Korea', 1990],
            [24021, 75.4, 3397534, 'New Zealand', 1990],
            [43296, 76.8, 4240375, 'Norway', 1990],
            [10088, 70.8, 38195258, 'Poland', 1990],
            [19349, 69.6, 147568552, 'Russia', 1990],
            [10670, 67.3, 53994605, 'Turkey', 1990],
            [26424, 75.7, 57110117, 'United Kingdom', 1990],
            [37062, 75.4, 252847810, 'United States', 1990]
        ],
        [
            [44056, 81.8, 23968973, 'Australia', 2015],
            [43294, 81.7, 35939927, 'Canada', 2015],
            [13334, 76.9, 1376048943, 'China', 2015],
            [21291, 78.5, 11389562, 'Cuba', 2015],
            [38923, 80.8, 5503457, 'Finland', 2015],
            [37599, 81.9, 64395345, 'France', 2015],
            [44053, 81.1, 80688545, 'Germany', 2015],
            [42182, 82.8, 329425, 'Iceland', 2015],
            [5903, 66.8, 1311050527, 'India', 2015],
            [36162, 83.5, 126573481, 'Japan', 2015],
            [1390, 71.4, 25155317, 'North Korea', 2015],
            [34644, 80.7, 50293439, 'South Korea', 2015],
            [34186, 80.6, 4528526, 'New Zealand', 2015],
            [64304, 81.6, 5210967, 'Norway', 2015],
            [24787, 77.3, 38611794, 'Poland', 2015],
            [23038, 73.13, 143456918, 'Russia', 2015],
            [19360, 76.5, 78665830, 'Turkey', 2015],
            [38225, 81.4, 64715810, 'United Kingdom', 2015],
            [53354, 79.1, 321773631, 'United States', 2015]
        ]
        ];

        option1 = {
        backgroundColor: {
            type: 'radial',
            x: 0.3,
            y: 0.3,
            r: 0.8,
            colorStops: [
            {
                offset: 0,
                color: '#f7f8fa'
            },
            {
                offset: 1,
                color: '#cdd0d5'
            }
            ]
        },
        grid: {
            left: 10,
            containLabel: true,
            bottom: 10,
            top: 10,
            right: 30
        },
        xAxis: {
            splitLine: {
            show: false
            }
        },
        yAxis: {
            splitLine: {
            show: false
            },
            scale: true
        },
        series: [
            {
            name: '1990',
            data: data[0],
            type: 'scatter',
            symbolSize: function(data) {
                return Math.sqrt(data[2]) / 5e2;
            },
            emphasis: {
                focus: 'series',
                label: {
                show: true,
                formatter: function(param) {
                    return param.data[3];
                },
                position: 'top'
                }
            },
            itemStyle: {
                shadowBlur: 10,
                shadowColor: 'rgba(120, 36, 50, 0.5)',
                shadowOffsetY: 5,
                color: {
                type: 'radial',
                x: 0.4,
                y: 0.3,
                r: 1,
                colorStops: [
                    {
                    offset: 0,
                    color: 'rgb(251, 118, 123)'
                    },
                    {
                    offset: 1,
                    color: 'rgb(204, 46, 72)'
                    }
                ]
                }
            }
            },
            {
            name: '2015',
            data: data[1],
            type: 'scatter',
            symbolSize: function(data) {
                return Math.sqrt(data[2]) / 5e2;
            },
            emphasis: {
                focus: 'series',
                label: {
                show: true,
                formatter: function(param) {
                    return param.data[3];
                },
                position: 'top'
                }
            },
            itemStyle: {
                shadowBlur: 10,
                shadowColor: 'rgba(25, 100, 150, 0.5)',
                shadowOffsetY: 5,
                color: {
                type: 'radial',
                x: 0.4,
                y: 0.3,
                r: 1,
                colorStops: [
                    {
                    offset: 0,
                    color: 'rgb(129, 227, 238)'
                    },
                    {
                    offset: 1,
                    color: 'rgb(25, 183, 207)'
                    }
                ]
                }
            }
            }
        ]
        };

            echarts.init(document.querySelector('#main')).setOption(option1)


            console.log(div);
        </script>
    </body>
</html>